A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT...

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits. This leads to excessive memory and CPU consumption, resulting in a denial of service (DoS) due to an OutOfMemoryError.

出典: OSV.dev (Open Source Vulnerabilities) OSV

影響パッケージ

Debian:12 netty

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 netty

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 netty

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

参照URL

advisory security-tracker.debian.org